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Clinical > MI > Flashcards

MI Flashcards

1
Q

Lad blocked

A

Anterior wall

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2
Q

Rca marginal

A

Medical wall

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3
Q

Circumflex

A

Lateral walls

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4
Q

Rca blocked

A

Posterior walls

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5
Q

Diagnosis of acute mi

A 
Chest pressure 
Left arm
Chest heaviness 
Radiation to jaw neck shoulder back arms
Nausea
Vomiting 
Dyspnea
Lightheadedness 
Sweating 
Confusion
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6
Q

Syndromes

A

Stable angina
Unstable angina
Non St elevation mi
St elevation mi

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7
Q

Stable angina

A

Transient episodic chest discomfort
Predictable
Follows physical an emotional stress
Ecg: normal t-wave changes ST depression

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8
Q

Unstable angina

A

Rest/new onset angina
Worsening in severity with less provocation
Same as stable angina

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9
Q

ECG changes ischemia

A

Inverted t waves

St segment depression

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10
Q

ECG changes injury

A

S-t elevation

T wave inversion

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11
Q

ECG of infarct

A

Associated with q waves

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12
Q

Events leading to mi

A 
Atherosclerosis 
Plaque ruptures
Platelet aggregation
Thrombus formation
Vessel occlusion 
Vasospasm
Distal ischemia
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13
Q

Irreversible injury requires ?

A

30 mins ischemia

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14
Q

Other characteristics of injury

A

Chronic O2 deficiency makes cells more resistant
After 30-60mins cell death starts
80% of cells at risk die within 3hrs
Almost 100% by 6hrs

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15
Q

Why increase level of cardiac enzymes

A 
With death:
Holes appear
Small, cytoplasmic markers leak quickly
Larger complex markers released slowly
Direct relationship between concentration of these markers and size on infarct
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16
Q

Cardiac enzymes

A 
Ck
Ck-mb
LDH 
Myoglobin 
Troponin
17
Q

Therapy triad

A

Anti-ischemics
Anti-thrombotics
Reperfusion

18
Q

Pharmacologica treatment

A 
Blood thinners
B-blockers
Calcium channel blockers
ACE inhibitors 
Diuretics 
Cholesterol lowering drugs
19
Q

Treatment post MI

A

Percutaneous transterminal coronary angioplasty (PTCA)

Coronary artery bypass grafts (CABG)

Clinical (9 decks)

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